Teledynamic control apparatus



1930. A. D. G. DELALANDE TELEDYNAMIC CONTROL APPARATUS 2 Sheets-SheetFiled Nov. 30, 1925 Jan. 21, 1930. A. D. G. DELALANDE 1,744,620

TELEDYNAMIC CONTROL APPARATUS Filed Nov. 30. 1925 2 Sheets-Sheet 2Patented Jan. 21, 1930 UNETE STATES PATET QFFICE ANDRE DESIRE onenessDELALANDE, on PAR-ES, FRANCE, ASSIGNOR on ONE-HALF T0 COMPAGNIE "Bonn LAFABRICATION DES COMPTEURS ET MATERIAL DUSINES A GAZ, OF MONTROUGE,SEINE, FRANCE, A LIMITED LIABILITY COMPANY, AND oNn HALF T0 LAGTION ADISTANCE, or PARIS, FRANCE TELEDYNAMIC CONTROL APPARATUS Applicationfiled November 30, 1925, Serial No. 72,419, and in France July 10, 1925.

This invention, for which I have applied for Letters Patent in Francedated July 10, 1925, No. 2061M with an application for a patent ofaddition dated September 16, 1925, No. 20286 relates to a device moreparticularly intended for solving problems involving the remote controlof mechanisms, which arise in connection with the exploitation ofelectrical power stations (variable tariff, lighting and extinction froma distance and the like), which problems may present themselves underthe following conditions:

A certain number of circuit breakers may be installed in the houses ofconsumers, other circuit breakers may be utilized for lighting andextinguishing thelamps intended for street illumination or for any otherpurpose. The problem is to enable any one of said circuit breakers or adefinite group of circuit breakers) to be opened and closed as desired,from the central stat-ion and utilizing only two conductors, with thepossibility of repeating this operation, if desired without acting, eventemporarily upon the other circuitbreakers.

In a more general manner, the device forming the subject of the presentinvention is applicable in all cases where it is required to obtain aselective action in the operations which are to be carried out at aplurality of receiving stations and where the electric connectionbetween said receiving stations and the transmitting station onlycomprises two conductors, or again when this connection is effected byHertzian waves.

In the following description however, there is merely described by wayof example, the manner in which the invention can be carried out inpractice when it is applied in the circumstances defined above to theremote control of a certain number of circuit breakers.

The difierent figures show respectively in a diagrammatic manner:

Fig. 1 the transmitting station as a whole.

Figs. 2 and 3 show a receiving station as a whole in plan and inelevation.

Figs. 4, 5 and 6 show details of a receiver.

The transmitting device shown in Fig. 1 comprises the following parts.

1 is the armature of a constant speed motor which, through theintermediary of a worm 2, drives a worm-wheel 3. The shaft 4 of thislatter wheel drives cams 0 c and so on, the number of which is equal tothe number of different apparatus to be controlled. Upon this shaftthere is also mounted a cam 5 which constitutes, with the brush 6, arotary circuit breaker which is utilized in order to automatically stopthe armature 1 each time the shaft at has made a revolution; 7represents the field coil which acts upon the armature 1; 8 and 9represent respectively the field coil and the armature of an A. C.generator which provides the current necessary to actuate the receivers.

The armature 9 is connected across the two leads 10 and 11 which areprovided or the purpose of effecting remote control.

Each cam such as 0 c has a certain nuinber of projections; 1 1 arelevers which control the pivoting movement of tl e mercury switches (4 aN, b are push buttons provided for the various operations necessary: 0 eare electromagnets which when excite-d, close the contacts m n n m andso on.

In order to carry out an operation, for example that corresponding tothe cam 0 pressure is exerted upon the button If, this operation sends acurrent through the electro- On the other hand,the closing of thecontact if enables the switch a successively to breakthe circuit and tosend to the exciting coil 8 current impulses which are regulated inaccordance with the profile of the cam 0 In the case shown in Fig. 1,two short impulses will occur followed by a final long impulse.

hen the shaft 4 has made one revolution, the contact between the brush 6and the cam 5 is broken; the circuit of the. electromagnet 0 is broken,the contacts m and n being under the action of return springs, open, andthe armature of the motor, being no longer traversed by the current,stops.

The device has thus returned to its original position and is ready tocome into action again.

The receiving device shown in Figs. 2, 3 and 4 comprises the followingparts.

Two electromagnets and 66 connected across the lines 10 and 11, (seeFig. 1) act by induction on a. conducting disc 12 so as to pro duce adriving torque thereon. Two capacities 67 and 6-8 are inserted in therespective circuits of the electromagnets G5 and 66 so as to produce atthe signalling current frequency a phase displacement angle of asnear 90as possible between the fluxes of said electromagnets in order that thedriving torque exerted on the disc 12 shall be the maximum obtainable.

The conducting; disc 12 is elastically connected to a shaft 13 as by aspring member 14.

Upon the shaft. 13 there is mounted a pinion15 which meshes with anotherpinion 16 mounted upon the shaft 17. A spiral spring 18 fixed to theshaft 17 by one of its extremities and by its other extremity to astationary portion19 of the apparatus, holds the device at rest throughthe intermediary of an abutment 2O fixed to the pinion 16 and bearingagainst the fixed member 19.

A member 21 fixed: to the shaft 17 carries a shaft 22. A ratchet wheel23, having for example ten teeth, (this number however could could bevaried as desired) is fixed upon the shaft 22. The ratchet wheel 23(Fig. 4) carries a finger 24 which strikes against the member 25 whichis movable about an axis 26, the member 25 itself abutting againstfingers 27 or 28 fixed upon the member 21, according to the direction ofrotation of the ratchet wheel 23.

The distance apart of the fingers 27 and 28 is adjusted in such a mannerthat the ratchet wheel can make a complete revolution.

A pawlmounted on the members 21 and29= held in engagement withtheratchet wheel 23 by a spring 30 serves as a retaining pawl. The pawl29 carries a finger 31.

A member 36 fixed upon the shaft 22 carries two pointers 37 and 38,which are arranged diametrically opposite each other and the positionsof which are controlled by the number of short signals emitted. Ahelical spring 39 fixed by one of its extremities to the shaft 22 and bythe other extremity to the member 21 presses the ratchet wheel throughthe intermediary of the finger 24 against the member 25 which itselfbears against the finger 27 when the retaining pawl 29 is raised. v i

A sleeve 32 is mounted with very slight friction upon the shaft 13 andis provided with a groove whicn enables it to turn upon this shaftthrough an angle which is limited by a pin 34 fixed in the shaft 13. Thesleeve 32 carries a finger 33.

A helical spring 35, having one of its ends fixed to the sleeve 32 andits other end to the shaft 13,v normally presses the sleeve 32 againstthe pin 34 so that the finger 33 acts in the same manner as a pawl withrespect to the ratchet wheel 23.

40 is a fixed incline which raises the finger 31- when the movableapparatus reaches the end of its stroke.

41- is a member comprising two inclines63 fixed to a lever 64 which ismovable abouta shaft 42 upon which is mounted a mercury switch 43.

hen at rest the movable members occupy the positions shown in Fig. 3.

Under the action of a driving couple, the disc 12 turns in a clockwisedirection and drives the pinion 16 in the opposite direction, the finger33 engages the tooth a of the ratchet wheel 23 and causes this wheel tomove forward to the extent of one tooth, while the pawl 29 prevents thewheel from returning rearwardly under the efiect of thespring 39. Thearrows in Fig. 3 show the directions of rotation of the variousoperating members.

A short current impulse causes a. short movement, the minimum of whichcorresponds to the angle through which the disc 12 or the-pinion 16 mustturn in order that the finger 33can cause the ratchet wheel 23 to rotateto the extent of one tooth. The maximum short movement corresponds tothe angle through which the disc 12 or the pinion 16 can rotate withoutone of the fingers 37 or 38 coming into engagement with the member 41.

When the first short impulse ceases the disc moves back under the actionof the spring 18 A and the ratchet wheel 23 raises the finger 33 whichthen escapes and returns to its original position while the abutment 20comes into engagement with the fixed member 19;

On the occasion of the second short impulse, the finger 33 engages thetooth b of the ratchet wheel 23; in the same way it causes the wheel toadvance by one tooth and the movable mechanism, with the exception ofthe ratchet wheel, returns to its original position.

On the occasion of the third movement of the disc, the finger 33 engagesthe tooth c'of the ratchet Wheel 23 and causes this latter wheel toadvance by one tooth. In this position, the finger 37, supported by themember 36 is located along the diameter 17 22 and directed towards theexterior of the wheel 16, as the current impulse is long, the disccontinues to rotate, taking with it the pinion 16 (Fig. 5) and thefinger 37 engages the member 41 and causes it to swing about the shaft42. The bulb 43 fixed to the shaft 42 also oscillates in its turn andcloses the circuit between its two electrodes.

As the long impulse continues, the finger 31 carried by the pawl 29 israised by the fixed incline 40 and the ratchet wheel returns to theoriginal position, which it occupied before the first short impulse,under the action of the spring 39; the finger 24 abuts against themember 25 which, itself, is in engagement with the finger 27.

The movement continues until the abutment 20 encounters the fixed member19. The driving couple exerted upon the disc can continue during acertain time without inconvenience. lVhen it stops, once the longimpulse is finished, the whole of the movable system moves back and,when the finger 31 leaves the incline 40, the pawl 29 is once morepressed against the ratchet wheel 23 by the spring 30.

If instead of causing two short movements and one long movement to takeplace, seven short movements and one long movement had been effected thefinger 38 which is diametrically opposite the finger 37, would haveengaged the member 41 and would have opened the circuit between the twoelectrodes of the mercury bulb 43.

Nhen, after a number of short impulses other than 2 and 7, a longimpulse is produced, it will be seen, (Fig. 6) that, the fingers 37 and38 not being upon the diameter 17, 22, cannot engage the member 41.

It will thus be seen that it is possible to effect ten differentoperations corresponding to the opening and closing of five circuitbreakers with five receivers, the switch actuating members of which,such as the fingers 37 and 38 of the receiver already described, wouldbe located respectively so as to operate suitably for O and 5, 1 and 6,2 and 7, 3 and 8, 4 and 9, short impulses.

The speed of the driving disc is regulated by an escapement not shown inthe drawings; the same result could moreover be obtained by means of abrake acting under centrifugal force of the kind used in automatictelephone calling apparatus. In order to maintain the speed as constantas possible, a driving couple may be maintained which is practicallyconstant, even when the elements which create it vary in value, byutilizing more particularly in the induction devices, magnetic leakageand saturation apparatus.

Instead of utilizing two conductors for the transmission of impulses, asingle conductor and the earth could be utilized as described in FrenchPatent No. 557114 of February 2, 1922, and in the additions thereto.

Finally, the conductors connecting the transmitter to the receiverscould be dispensed with and Hertzian waves could be utilized.

In this case the transmitting station generates impulses of highfrequency current of short or long duration.

The devices described above furthermore present the followingadvantages:

The utilization at each receiving station of a small induction motorwhich can rotate a considerable time, that is to say during severalseconds considerably diminishes the power absorbed by each station, inparticular as compared with the power which would be absorbed by ateledynamic control actuated by an electromagnet acting instantaneously.

Finally, since it is possible to make the.

ratio between the durations of a long impulse and a short impulse asgreat as may be desired, the operation of the teledynamic control deviceas described remains reliable even in cases where the tension is subjectto great variations.

I claim:

1. Circuit selector operated by electrical impulses comprising, incombination, a switch controlling a local circuit, a switch actuatingmember, a bracket member carrying said switch actuator, means responsiveto current impulses for effecting displacement of said bracketproportional to the duration of said impulses, said switch actuatornormally being so angularly positioned relative to said bracket as toclear said switch for any displacement of said bracket, and means,actuated through the displacement of said bracket under said impulseresponsive means, for rotating said switch actuator relative to saidbracket through a constant angle for each current impulse whereby saidswitch actuatoris brought, after 'a given number of short currentimpulses, into a predetermined angular position relative to said bracketin which it will engage said switch when carried bodily by said bracketpast the switch on the occurrence of a long current impulse.

2. Circuit selector operated by electric current impulses of varyingduration, comprising, in combination, a switch controlling a localcircuit, a switch actuating member, a bracket member located in spacedrelation to said switch, and on which said switch actuator is rotatablymounted, means responsive to current impulses for rotating said bracketthrough an angle proportional to the duration of said impulses, saidswitch actuator being normally so angularly positioned with respect tosaid bracket as to clear said switch for any rotation of said bracket,restoringmeans for returning said bracket to its original position atthe end of each impulse, means switch actuator relative to said bracketactuated through the rotation in one direction of said bracket, forrotating said switch actuator relative to said bracket through aconstant angle at each current impulse and -means for preventingrotation of said switch bracket member located in spaced relation tosaid switch, and on which said switch actuator is rotatably mounted,means respon sive to current impulses for rotating said bracket throughan angle proportional to the duration of said impulses, said switchvactuator being. normally so angularly positioned with respect to saidbracket as to clear said switch for any rotation of said bracket,restoring means for returning said bracket to its original position atthe end of each impulse, means a'ctuated through the rotation in onedirection of said bracket, for rotating said through a constant angleatleach currentimpulse,.means for preventing: rotation of said switchactuator relative. to said bracket in the opposite direction, saidswitch actuator after a predetermined number. of short current impulsesbeing brought intorsuchangular position relative to. said bracket as toengage said switch when carried bodily by said bracket past said switchon the occurrence of a long current impulse, and nieansoperative on along rotation of said bracket for returning said switch actuator to itsoriginal angular position relative to said bracket.

4. Circuit selector operated by electrical impulses of varying durationcomprising, in combination, a switch controlling. a local circuit, adisc means responsive to current impulses for rotatingsaid disc throughan. angle proportional tothe duration of said impulses, a bracket memberlocated in spaced relation to said. switch and rotated by said disctowards said switch, a shaft carried by said bracket but rotatable withrespect thereto, a switch actuator carried by said shaftand normally soposit-ionedrel-ative to said bracket as to clear said switch as saidbracket is rotated, a toothed wheel fixedly mounted on said shaft, andmeans adapted to engage with said toothed wheel as said shaft isdisplaced with said bracket and to rotate said wheel through one toothat each current impulse, whereby said switch actuator is moved step bystep into such angular position relative to said bracket after apredetermined number ofmined angular short current impulses as tobe'carried by said bracket into engagement with said switch on the nextlong current impulse.

5 Circuit selector operated by electrical impulses of varying durationcomprising, in combination, a switch controlling a local circuit, adisc, means responsive to current impulses for rotating said discthrough an angle proportional to the duration of said impulses, abracket member located in spaced relation to said switch and rotated bysaid disc towards said switch, a shaft carried by said bracket butrotatable with respect thereto, a switch actuator carried bysaid shaftand normally so positioned relative to said bracket as to clear saidswitch as said bracket is rotated, a ratchet wheel fixedly mounted onsaid shaft, a pawl pivoted to said bracket and engaging with saidratchet wheel, means adapted to engage with said ratchet wheel as saidshaft is swung with said bracket for rotating said wheel through onetooth at each current impulse whereby said switch actuator is moved stepby step into such angular position relative to said bracket after apredetermined number of short current impulses as to be carried. by saidbracket into engagement with said switch on the nextlong currentimpulse, means with which said pawl is brought into engagement on theoccurrence of a long swing of said bracket for releasing said pawl fromsaid ratchet wheel, and a spring, operative on. the release of saidpawl, for rotating said shaft and switch actuator back to apredeterposition relative to said bracket. i

6. Circuit selector operated by electrical impulses of varying durationcomprising, in combination, a switch controlling a local circuit, adisc, means'responsive to current impulses for rotating said discthrough an an gle proportional to the durations of said impulses,restoring means for returning said disc to its original position at theend of each current impulse, a shaft rotated from said disc, a bracketmember fixedly mount-edon said shaft for rotating therewith past saidswitch, a second shaft supported by said bracket, but rotatable withrespect thereto, a switch actuator mounted on said shaft and so set withrespect to said bracket as normally. to. clear'said switch as saidbracket is rotated past the same, a ratchet wheel fixedly mounted onsaid second shaft, a retaining pawl pivoted to said bracket and engagingwith said ratchet wheel, a-third shaft on which said disc-is mounted, asleeve carried by said third shaft, flexible coupling means between saidthird shaft and sleeve, a pin carried by and rotating with said sleeve,said pin engaging with said ratchet wheel as said second shaft is swung.with said bracket and rotating said ratchet wheel through one teeth ateach current impulse whereby said'switch actuator is steppedinto suchangular position relative to said bracket after a predetermined numberof short current impulses as to be carried by said bracket intoengagement with said switch on the next succeeding long current impulse,a fixed abutment member with which said pawl is brought into engagementon a long swing of said bracket and is released thereby from saidratchet wheel, and a s ring, operative on the release of said pawl, orrotating said second shaft and switch actuator back to a predeterminedangular position relative to said bracket.

ANDRE DESIRE GEORGES DELALANDE.

